Turbofan engine main shaft bearing dismounting tool

Abstract

The utility model relates to the field of turbofan engines, and discloses a turbofan engine main shaft bearing disassembling tool which comprises a turbofan engine main shaft, a main shaft fixing ring is connected to the outer wall of the turbofan engine main shaft in a sliding and sleeved mode, and a turbofan engine main shaft bearing is connected to the outer wall of the main shaft fixing ring in a sleeved mode. The side edge, corresponding to a turbofan engine spindle bearing, of the outer wall of the spindle fixing ring is sleeved with an integrated mounting ring, the side edge, corresponding to the spindle fixing ring, of a turbofan engine spindle is sleeved with a fixing ring, the outer wall of the fixing ring is sleeved with a connecting ring, a sleeve is fixedly arranged on the side, corresponding to the connecting ring, of the mounting ring, and a vertical clamping rod is movably mounted on the sleeve. A fixing shaft is fixedly connected to the side, corresponding to the mounting ring, of the connecting ring, a clamping groove is formed in the top end of the fixing shaft, a horizontal fixing square rod is slidably connected to the side edge of the fixing ring, a clamping assembly is arranged on the fixing square rod, the device is easy and fast to mount, the dismounting time is further shortened, and certain operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of turbofan engines, in particular to a turbofan engine main shaft bearing disassembly tool. Background Art

[0002] The turbofan engine is a power device widely used in aviation, aerospace and other fields. Its performance and reliability are crucial to the safety of aircraft and mission completion. In a turbofan engine, the main shaft bearing, as one of the key components, undertakes important functions such as supporting the engine rotor, transmitting torque and bearing radial force. Therefore, the performance of the main shaft bearing directly affects the operating efficiency, life and maintenance cost of the engine. With the continuous development of aerospace technology, the requirements for the main shaft bearings of turbofan engines are getting higher and higher. First of all, the main shaft bearing needs to have a high load-bearing capacity to withstand the large radial and axial forces generated by the engine during high-speed rotation. Secondly, the main shaft bearing should have good wear resistance to ensure that it does not fail during long-term operation. In addition, the main shaft bearings also need to have a low friction coefficient and good thermal stability to reduce the engine's fuel consumption and maintenance costs. Under long-term and high-intensity operations, the bearings are faced with maintenance and inspection steps. Whether it is maintenance or inspection, entering the engine to repair the corresponding bearings not only wastes part of the operation time, but also creates certain risks to the interior of the engine. In order to improve the efficiency of bearing operations, we hope to be able to remove the bearings from the main shaft for operation to ensure the efficiency of the operation and protect the safety of the bearings. For this reason, we proposed a turbofan engine main shaft bearing disassembly tool. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a turbofan engine main shaft bearing disassembly tool to solve the above-mentioned problems.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a turbofan engine main shaft bearing disassembly tool, including a turbofan engine main shaft, the outer wall of the turbofan engine main shaft is slidably sleeved with a main shaft fixing ring, the outer wall of the main shaft fixing ring is sleeved with a turbofan engine main shaft bearing, the outer wall of the main shaft fixing ring is sleeved with an integrated mounting ring corresponding to the side of the turbofan engine main shaft bearing, a fixing ring is sleeved on the side of the turbofan engine main shaft corresponding to the main shaft fixing ring, a connecting ring is sleeved on the outer wall of the fixing ring, a sleeve is fixedly provided on one side of the mounting ring corresponding to the connecting ring, a vertical clamping rod is movably installed on the sleeve, a fixed shaft is fixedly connected to one side of the connecting ring corresponding to the mounting ring, a clamping groove is opened on the top of the fixed shaft, a horizontal fixed square rod is slidably connected to the side of the fixing ring, and a clamping assembly is arranged on the fixed square rod.

[0007] Preferably, the sleeves are provided in four groups and are arranged equidistantly in a ring shape.

[0008] Preferably, the fixed shafts are provided with four groups, which correspond to each group of sleeves respectively. The topmost group of fixed shafts is provided with a clamping groove which runs through the top to the bottom of the fixed shafts, and the fixed shafts are movably sleeved with the sleeves.

[0009] Preferably, the topmost group of sleeves is movably connected to a vertical clamping rod, and a second clamping groove penetrating through both sides of the clamping rod is provided on the clamping rod near the bottom end.

[0010] Preferably, the clamping assembly includes a mounting hole, a rotating shaft, a spring and a clamping arc plate, a fixing ring extends from the end of the fixed square rod, mounting holes are provided on both sides of the fixed square rod, a vertical rotating shaft is fixedly installed in the mounting hole, the middle part of the rotating shaft is rotatably connected to the clamping arc plate, one end of the spring is fixedly connected to the side of the rotating shaft on the inner wall of the mounting hole, and the other end of the spring is fixedly connected to the side of the clamping arc plate.

[0011] Preferably, a through groove is provided on the side of the main shaft fixing ring corresponding to the fixed square rod, and the end of the fixed square rod extends into the through groove through the second clamping groove.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a turbofan engine main shaft bearing disassembly tool, which has the following beneficial effects:

[0014] 1. The turbofan engine main shaft bearing disassembly tool is implemented by sliding the main shaft fixing ring on the outer wall of the turbofan engine main shaft and bringing it close to the fixing ring, and extending the four groups of fixing shafts on the side of the connecting ring on the fixing ring into the four groups of sleeves on the mounting ring. The clamping rod on the topmost group of sleeves connects the sleeve to the fixing shaft through the clamping groove, and then the fixed square rod is pushed so that the end of the fixed square rod first passes through the clamping groove 2 at the bottom end of the clamping rod and then extends into the through groove. In the process of sliding of the fixed square rod, when the fixed square rod passes through the fixing ring, the clamping arc plates on both sides are compressed and deformed by the spring, and the ends of the clamping arc plates rotate on the rotating shaft. After passing through the fixing ring, the spring can pop out the clamping arc plate to complete the fixation between the turbofan engine main shaft and the turbofan engine main shaft bearing. This device is not only simple and quick to install, but also further reduces the disassembly time and improves the working efficiency to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the clamping rod and the clamping groove of the utility model;

[0017] Figure 3 This is a schematic diagram of the fixed square rod structure of the utility model;

[0018] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the figure.

[0019] In the figure: 1. turbofan engine main shaft; 2. main shaft fixing ring; 3. mounting ring; 4. fixing ring; 5. connecting ring; 6. sleeve; 7. fixed shaft; 8. clamping rod; 9. clamping groove 2; 10. clamping groove; 11. through groove; 12. turbofan engine main shaft bearing; 13. fixed square rod; 14. mounting hole; 15. rotating shaft; 16. spring; 17. clamping arc plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4A turbofan engine main shaft bearing disassembly tool comprises a turbofan engine main shaft 1, a main shaft fixing ring 2 is slidably sleeved on the outer wall of the turbofan engine main shaft 1, a turbofan engine main shaft bearing 12 is sleeved on the outer wall of the main shaft fixing ring 2, an integrated mounting ring 3 is sleeved on the side of the outer wall of the main shaft fixing ring 2 corresponding to the turbofan engine main shaft bearing 12, a fixing ring 4 is sleeved on the side of the turbofan engine main shaft 1 corresponding to the main shaft fixing ring 2, a connecting ring 5 is sleeved on the outer wall of the fixing ring 4, a sleeve 6 is fixedly arranged on one side of the mounting ring 3 corresponding to the connecting ring 5, a vertical clamping rod 8 is movably arranged on the sleeve 6, a fixing shaft 7 is fixedly connected to one side of the connecting ring 5 corresponding to the mounting ring 3, a clamping groove 10 is opened on the top of the fixing shaft 7, a horizontal fixing square rod 13 is slidably connected to the side of the fixing ring 4, and a clamping assembly is arranged on the fixing square rod 13.

[0022] There are four groups of sleeves 6 arranged in a circular shape with equal spacing. When the device needs to be installed, the main shaft fixing ring 2 is first sleeved on the main shaft 1 of the turbofan engine, and the main shaft fixing ring 2 is placed close to the side of the fixing ring 4.

[0023] There are four groups of fixed shafts 7, which correspond to each group of sleeves 6. The topmost group of fixed shafts 7 is provided with a clamping groove 10 that passes through the top to the bottom of the fixed shaft 7. The fixed shaft 7 and the sleeve 6 are movably connected. The four groups of sleeves 6 are connected to the four groups of fixed shafts 7 on the connecting ring 5. When the end of the fixed shaft 7 is in contact with the inner wall of the sleeve 6, the bottom end of the clamping rod 8 on one group of sleeves 6 is first passed through the clamping groove 10 on the fixed shaft 7, and then passed through to the bottom end of one group of sleeves 6.

[0024] The topmost set of sleeves 6 is movably connected with a vertical clamping rod 8. A clamping groove 2 9 penetrating through both sides of the clamping rod 8 is provided on the clamping rod 8 near the bottom. The end of the fixed square rod 13 passes through the clamping groove 2 9 at the bottom of the clamping rod 8. When the fixed square rod 13 passes through the fixed ring 4, the fixed square rod 13 is pushed. When the two sets of clamping arc plates 17 touch the side walls of the fixed ring 4, the clamping arc plates 17 squeeze the springs 16 to shrink and deform through the pushing force.

[0025] The clamping assembly includes a mounting hole 14, a rotating shaft 15, a spring 16 and a clamping arc plate 17. A fixing ring 4 extends from the end of the fixed square rod 13. Mounting holes 14 are provided on both sides of the fixed square rod 13. A vertical rotating shaft 15 is fixedly installed in the mounting hole 14. The middle part of the rotating shaft 15 is rotatably connected to a clamping arc plate 17. One end of the spring 16 is fixedly connected to the side of the rotating shaft 15 corresponding to the inner wall of the mounting hole 14, and the other end of the spring 16 is fixedly connected to the side of the clamping arc plate 17. The side of the clamping arc plate 17 is fitted with the inner wall of the mounting hole 14, and rotates on the rotating shaft 15 through one end of the clamping arc plate 17.

[0026] A through groove 11 is provided on the side of the main shaft fixing ring 2 corresponding to the fixed square rod 13, and the end of the fixed square rod 13 extends into the through groove 11 through the clamping groove 29. When the clamping arc plate 17 passes through the fixing ring 4, the end of the clamping arc plate 17 away from the rotating shaft 15 is deformed by the spring 16 so that one end of the clamping arc plate 17 pops outward, thereby fixing the main shaft bearing 12 of the turbofan engine.

[0027] Working principle: When the device needs to be installed, first, the main shaft fixing ring 2 is sleeved on the main shaft 1 of the turbofan engine, and the main shaft fixing ring 2 is close to the side of the fixing ring 4, and the four sets of sleeves 6 are sleeved on the four sets of fixed shafts 7 on the connecting ring 5. When the end of the fixed shaft 7 fits with the inner wall of the sleeve 6, first, the bottom end of the clamping rod 8 on one set of sleeves 6 is passed through the clamping groove 10 on the fixed shaft 7, and then penetrated to the bottom end of one set of sleeves 6, and then the end of the fixed square rod 13 passes through the clamping groove 9 at the bottom end of the clamping rod 8. When the fixed square rod 13 passes through the fixing ring 4, By pushing the fixed square rod 13, when the two sets of snap-fitting arc plates 17 touch the side wall of the fixing ring 4, the snap-fitting arc plate 17 squeezes the spring 16 to shrink and deform through the pushing force, so that the side of the snap-fitting arc plate 17 fits the inner wall of the mounting hole 14, and one end of the snap-fitting arc plate 17 rotates on the rotating shaft 15. When the snap-fitting arc plate 17 passes through the fixing ring 4, the end of the snap-fitting arc plate 17 away from the rotating shaft 15 is deformed by the spring 16, so that one end of the snap-fitting arc plate 17 pops outward, thereby fixing the main shaft bearing 12 of the turbofan engine.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turbofan engine main shaft bearing disassembly tool, comprising a turbofan engine main shaft (1), wherein the outer wall of the turbofan engine main shaft (1) is slidably sleeved with a main shaft fixing ring (2), and the outer wall of the main shaft fixing ring (2) is sleeved with a turbofan engine main shaft bearing (12), characterized in that: An integrated mounting ring (3) is sleeved on the outer wall of the main shaft fixing ring (2) corresponding to the side of the turbofan engine main shaft bearing (12); a fixing ring (4) is sleeved on the side of the turbofan engine main shaft (1) corresponding to the main shaft fixing ring (2); a connecting ring (5) is sleeved on the outer wall of the fixing ring (4); a sleeve (6) is fixedly provided on one side of the mounting ring (3) corresponding to the connecting ring (5); a vertical clamping rod (8) is movably installed on the sleeve (6); a fixing shaft (7) is fixedly connected to one side of the connecting ring (5) corresponding to the mounting ring (3); a clamping groove (10) is provided on the top of the fixing shaft (7); a horizontal fixing square rod (13) is slidably connected to the side of the fixing ring (4); and a clamping assembly is provided on the fixing square rod (13).

2. A turbofan engine main shaft bearing disassembly tool according to claim 1, characterized in that: The sleeves (6) are provided in four groups and are arranged in a circular shape at equal intervals.

3. A turbofan engine main shaft bearing disassembly tool according to claim 1, characterized in that: The fixed shafts (7) are provided in four groups, which correspond to each group of sleeves (6) respectively. The topmost group of fixed shafts (7) is provided with a clamping groove (10) which runs through the top end to the bottom end of the fixed shafts (7). The fixed shafts (7) are movably sleeved with the sleeves (6).

4. A turbofan engine main shaft bearing disassembly tool according to claim 3, characterized in that: The topmost group of sleeves (6) is movably connected to a vertical clamping rod (8), and a second clamping groove (9) penetrating through both sides of the clamping rod (8) is provided on the clamping rod (8) near the bottom end.

5. The turbofan engine main shaft bearing disassembly tool according to claim 1, characterized in that: The clamping assembly comprises a mounting hole (14), a rotating shaft (15), a spring (16) and a clamping arc plate (17); a fixing ring (4) extends from the end of the fixed square rod (13); mounting holes (14) are provided on both sides of the fixed square rod (13); a vertical rotating shaft (15) is fixedly installed in the mounting hole (14); a clamping arc plate (17) is rotatably connected to the middle of the rotating shaft (15); one end of the spring (16) is fixedly connected to the side of the rotating shaft (15) on the inner wall of the mounting hole (14); and the other end of the spring (16) is fixedly connected to the side of the clamping arc plate (17).

6. A turbofan engine main shaft bearing disassembly tool according to claim 5, characterized in that: A through slot (11) is provided on the side of the main shaft fixing ring (2) corresponding to the fixing square rod (13), and the end of the fixing square rod (13) extends into the through slot (11) through the second clamping slot (9).

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